Finding the Third Proportional to 79,327 and 172,856

Step by Step Solution

1. Step 1: Write the proportion equation
   79,327 : 172,856 = 172,856 : x
2. Step 2: Convert to fraction form
   79,327/172,856 = 172,856/x
3. Step 3: Cross multiply
   79,327x = 172,856 × 172,856
4. Step 4: Simplify right side
   79,327x = 29,879,196,736
5. Step 5: Solve for x
   x = 29,879,196,736/79,327
6. Step 6: Final answer
   x = 376,658.60